(1) How is the t distribution similar to the standard z distribution?
Answer
Both are continuous distribution
Both are bell-shaped
Both are families of distributions
A and B
2. A sample of 50 is selected from a known population of 250 elements. The population standard deviation is 15. Using the finite correction factor, what is the standard error of the sample means?
Answer
2.89
1.90
2.12
Cannot be determined
3. Administering the same test to a group of 15 students and a second group of 15 students to see which group scores higher is an example of
Answer
a one sample test of means.
a two sample test of means.
a paired t-test.
a test of proportions.